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IEEE
CORPORATE-DEVELOPED STANDARD OFFERS SYSTEMS APPROACH TO RELIABILITY
IN MOBILE COMPUTER BATTERIES
IEEE 1625™ Sets Guidelines for Design, Manufacture and Testing
of Lithium-Ion Battery Cells and Packs
Contact:
Jeff Layton, Working Group Chair
+1 512-728-1192, jeff_layton@dell.com
Karen McCabe,
IEEE Senior Marketing Manager
+1 732 562 3824, k.mccabe@ieee.org
For Release:
Immediate
PISCATAWAY,
N.J., 12 April 2004 Strong demand for advanced lithium-ion
batteries in portable computers has led to a new IEEE standard
that adopts a systems approach to improve battery reliability.
The standard, IEEE
1625™, "Standard for Rechargeable Batteries
for Portable Computing," sets the stage for the production
of batteries to meet the greater demands placed on them in notebook
computers, such as those for more power, greater energy density
and more frequent charge-discharge cycles.
IEEE 1625 specifies minimum guidelines for the design, validation
and manufacture of battery cells and packs, alone and together
with the mobile computers they power. It provides for consistency
in such areas as battery qualification, process control, chemistries,
packaging and end-user notification. It also specifies multi-fault
scenarios that consider combinations of factors that can cause
battery failure. This should lead to the addition of protections
that minimize risk in face of thermal and mechanical shock, vibration
and other stresses.
"The push for better laptop batteries is unrelenting,"
says Jeff Layton, IEEE 1625 Working Group Chair. "Combine
the prevalence of more powerful mobile processors, wireless applications
and advanced graphic capabilities with growing average daily use
of mobile computers and it's clear lithium-ion battery packs will
have to become more reliable and robust over time."
"While other battery standards tend to emphasize either the
cell or the pack, IEEE 1625 is concerned with the operating envelope
for all elements from cell to system, both alone and in concert.
The ultimate goal of this voluntary standard is to improve user
experience even as batteries grow more complex."
Layton notes that the working group completed the standard in
about 15 months. "This is an exceptionally short time for
a standard with this level of complexity," he says. "The
speed with which we acted was possible because the members of
the working group were highly motivated to create the standard.
"Another factor was that we worked as an organization-only
working group within the IEEE Standards Association's Corporate
Program. This program gave us the support services we needed to
stay focused and on a fast track."
The standard is based on the collective experience of leading
manufacturers of mobile computer cells, packs and mobile computer
systems. Companies that worked on the standard included: Battery-Biz,
Compal Electronics, Dell, Dynapack, Fedco Electronics, Hewlett
Packard, IBM, Inventec, Motorola, National Semiconductor, Panasonic,
Quanta, Samsung, Sanyo, Sony, Solectron, Texas Instruments and
Wistron.
IEEE P1625 is sponsored by the Stationary Battery Committee of
the IEEE Power Engineering Society.
About
the IEEE Standards Association
The IEEE Standards Association (IEEE-SA), a global standards-setting
body, develops consensus standards through an open process that
brings diverse parts of an industry together. It has a portfolio
of more than 870 completed standards and more than 400 in development.
IEEE-SA promotes the engineering process by creating, developing,
integrating, sharing and applying knowledge about electro- and
information technologies and sciences for the benefit of humanity
and the profession. For further information on IEEE-SA visit:
http://standards.ieee.org/.
About the
IEEE
The IEEE has more than 380,000 members in approximately 150 countries.
Through its members, the organization is a leading authority on
areas ranging from aerospace, computers and telecommunications
to biomedicine, electric power and consumer electronics. The IEEE
produces nearly 30 percent of the world's literature in the electrical
and electronics engineering, computing and control technology
fields. This nonprofit organization also sponsors or cosponsors
more than 300 technical conferences each year. Additional information
about the IEEE can be found at http://www.ieee.org/.
IEEE 1625,
Li-ionHart are trademarks of the IEEE. All other names or product
names are the trademarks, service marks or registered trademarks
of their respective holders.
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